30888900 has 108 divisors (see below), whose sum is σ = 110673472. Its totient is φ = 7058880.

The previous prime is 30888887. The next prime is 30888911. The reversal of 30888900 is 988803.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3849 + ... + 8751.

Almost surely, 2^30888900 is an apocalyptic number.

30888900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30888900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55336736).

30888900 is an abundant number, since it is smaller than the sum of its proper divisors (79784572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30888900 is a wasteful number, since it uses less digits than its factorization.

30888900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930 (or 4920 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 30888900 is about 5557.7783331112. The cubic root of 30888900 is about 313.7623392659.

The spelling of 30888900 in words is "thirty million, eight hundred eighty-eight thousand, nine hundred".